21099687081

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3907}}^1\times {\mathrm{4423}}^1$

素因数の和:8381

約数の個数: 32

約数和(自身を含む): 31535121408

約数和(自身を除く): 10435434327

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 3907, 4423, 11721, 13269, 42977, 48653, 128931, 144559, 145959, 163651, 433677, 490953, 1590149, 1800161, 4770447, 5400483, 17280661, 51841983, 190087271, 570261813, 639384457, 1918153371, 7033229027, 21099687081]

約数ペア:

[(1, 21099687081), (3, 7033229027), (11, 1918153371), (33, 639384457), (37, 570261813), (111, 190087271), (407, 51841983), (1221, 17280661), (3907, 5400483), (4423, 4770447), (11721, 1800161), (13269, 1590149), (42977, 490953), (48653, 433677), (128931, 163651), (144559, 145959)]